CombAmmOpt: Elucidation of fundamental COMBustion characteristics of AMMonia blended fuels to develop and OPTimize the design of low carbon gas turbines for power plantsAxes: EnergyLeaders: Hideaki KOBAYASHI (IFS, TU) & Dany ESCUDIE (CETHIL, CNRS/INSA-Lyon)Participants: Cedric GALIZZI (CETHIL, INSA-Lyon)Double degree PhD student: Sophie COLSONIn the context of global warming and fossil fuel depletion, research for new sustainable sources of energy is necessary. Ammonia, as a carbon-free fuel can be considered as a promising solution. Ammonia can be produced from H2and N2using clean and renewable energy and can then be considered as a green fuel. Compared with H2, ammonia presents safer features for transportation and storage so that its use in industrial scale is feasible, which makes of it a good energy carrier for near future. However, the use of ammonia as a fuel for gas turbine remains challenging due to its low burning intensity. Production of NOxduring ammonia combustion can also be an issue which needs to be monitored and tackled. In this context, the use of ammonia blended fuel, such as ammonia-methane or ammonia-hydrogen mixtures, can be used as a mean to the development of ammonia use as a fuel and carbon emission reduction. Thus, the purpose of this international collaboration PhD is to elucidate the fundamental characteristics of the ammonia and ammonia blended fuels diffusion flames to develop and optimize the design of gas turbines and combustors. In order to do so NOxemission reducing strategy and turbulent combustion control will be investigated by the study of laminar flame fundamentals, extinction stretch rate, and flame chemistry and stabilization process.